Combination-lock.



J. J. MURPHY.

COMBINATION LOOK.

APPLICATION FILED APB..19.1909.

930,079. Patented Au 3, 1909.

UNITED STATES PATENT OFFICE.

JAMES J. MURPHY, OF TERRYVILLE, GONNECTIGUT, ASSIGNOR TO EAGLE LOCK (30., OF

TERRYVILLE, CONNECTICUT, A CORPORATION.

commarron-noex.

Specification of Letters Patent.

Patented Aug. 3, 1909.

Application filed April 19, 1909. Serial No. 490,941.

and I do hereby declare the following, when taken in connection with the accompanying drawings and the numerals of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and

represent, in I Figure 1 a view in front elevation of a lock constructed in accordance with my invention. Fig. 2 a view in inside elevation of the permutation mechanism with the clickwheel, the drive-wheel and the wheel-tumblers broken away to show the coaction of the operating dog with the locking-wheel, the bolt being shown in its projected posir tion in which it islocked or dogged by the nose of the dog. Fig. 3 a similar view with the click-wheel, drive-wheel and top wheeltumbler removed, the bottom wheel-tumbler being broken away to expose the locking-wheel which is shown as engaged by the locking-dog the nose of which in this position of the dogis disengaged from the bolt which is shown in its unlocked or retracted position. FigAaview in vertical section on the linea=b of Fig. 2. Fig. 5 a detached view of the oscilmatically latinglate 9. Fig. oaporresponding view of the liockingr-dog. Fig. 7 a detached view of the follower-wheel. Fig. 8 a corresponding view of one of the drivers. Fig. 9 a detached view of the drive and click-wheels. Fig. 10 an edge view of the bolt.

My invention relates to an improved selflocklngcombination dead-bolt locker-lock in which as the bolt is moved by its spring into its locked osition, the tumblers are autol'irown out of alinement so that the bolt cannot be unlocked until after the combination has been worked to restore them to alinement, the object being to provide a lock of this character with sim le, durable, reliable and effective means for ogging the bolt and throwing the tumblers out of alinement as the bolt 1s moved into its locked position.

With these-ends in view my invention consists in a lock having certain details of conetruction and combinations of parts as will be hereinafter described and pointed out in the claims.

As herein-shown I have applied mv invention to a self-locking combination locker-lock constructed and operated on well known lines so far as its tumblers and click are concerned. I will therefore begin the description of thedevice with. the novel parts rather than with the parts of known construction.

In car 'n out my invention, I employ a lever-likdi ac 'ng dog 2 which oscillates upon .a pin 3 the res ective ends of whichare j 0ur-. naled in the bottom of the case 4 and its cover 5. One end ofthis dog is formed with a dogging nose 6 which coacts with a locking.- arm 7 extending inward at a right angle from the bolt at a olnt near the base of the head 8 thereof. en the bolt is shot into its projectedor locked position the dogging nosefi of he d g 2 i m ved so as. to s an -di ect y behind thearm ,7 by the turning of the said dog upon its pivot/3 by the .oscillation of a swinging carrier-plate 9 bearin upon the bottom of the case 4 and forms 7 with a lug 10 enterin a notch 11 inthe inner edge of the dog. he opposite end of the dog 2 is formed with an inwardly turned hook 1 2 which engages with the teeth of a ratchet wheel 13 bearing upon the late 9 and an upwardly extending nger l4 entering some one of a circular series of holes 15 formed in the bottom wheel-tumbler 16 which conforms in construction to the top tumbler 17. These two wheelstumblers 16 and 1 7 are of well known construe-r tion and are employed for changing the combination. the bottom tumbler 16 bein set in .difl erent :ways with relation to the w eel 13 the finger 14 of whichmay be passed through any one of the holes 15 in it. The said cartier-plate 9 is mounted upon a tube 18 the inner end of which enters an openin 19 in the bottom of the case 4, said inner en of the tube being formed with slots 20 for the receiption of lugs 21 extendinginward from t e openin 22 otthe late, whereby the tube is couple with the p ate so as to turn therewlth and whereby the tube is prevented from moving inward out of place through the plate. The Wheel 13 and the tumblers 16 and '17 are also mounted u on the tube on which thev are inde endent y rotatable.

Normally the hoo 12 of the dog 2 is disengaged from the teeth of the wheel 13, the

dog being held in this osition against the tension ofits spring 23, y the lug of the plate 9 when t e same is in its locked POSI- tion. When, however, the plate 9 is swung into its unlocked position, it turns the dog 2 so as to clear the nose 6 thereof from the lockin -arm 7 of the bolt before the post 24 carrie b the lateis entered into the slot'25 in the tai 26 o the bolt so as to begin the retraction thereof. As the nose 6 of the dog 2 swings outward away from the arm 7, the hook 12 of the dog moves inwardso as to en- I gage with the teeth of the wheel 13. Now as the bolt is retracted, the wheel 13 will be turned from left to right, its teeth riding under the hook 12 which will snap over them,

so to speak. This will continue until the bolt has been fully retracted. As soon, howinto its locked wheel tumbler 16 is prevented from rotation by the operating-dog 27 as the same is bodily moved with the plate 9 upon which it is mounted when the said plate is turning during the projecting of the bolt. In other words, the edge of the operating dog 27 will be compelled to ride-out of the notch 28in the bottom wheel-tumbler 16 whether or not it rides out of the corresponding notch 29 in the top wheel-tumbler 17. Therefore as the bottom wheel-tumbler 16 is held against rotation during the projection of the bolt, by means of the wheel 13 and the locking dog 2 the alinement of the notches 28, 29, in the bottom and to tumblers 16 and-'17 with respect to the e ge of the o crating dog 27- is necessarily broken as the b jected, making it necessary to work the combination before the bolt can be again retracted.

It will be understood that the locking-dog 2 is never-in position to coactwith the wheel 13-for the urpose of insuring the throwing of the tum lers 16 and 17 out of alinement, exce t when the lock is unlocked and during the rief interval in'which the bolt'is being moved from its unlocked intoits locked position. After the bolt has been moved mto itsfully projected and locked position, the plate 9 on account of the clearance cut 30 in the tail 26 of the bolt continues to swing so as to o erate through its lug 10 in swinging the loo ing-dog 2 so as to bring its.doggingnose 6 thereof back of the locking arm 7 of the bolt for holdingthe same in its locked position. In other words, the carrier-plate 9 has anexcess of movement in each direction from the movement required of it to project and retract the bolt, the excess of movement in onedirection being necessary to move the dogging nose 6 of the dog 2' out of the path of the arm 7 of the bolt preparatory to retractolt is being proing the bolt and so as to unlock the same,-

- and the excess of movement in the other direction being necessary so that after the bolt has been fully projected the nose 6 of the dog 2 may be moved. intoposition back of the arm 7 of thebolt to lock the same.

The operating-dog 27 which swings upon the post 24 carried by the late 9, is pro vided with a spring 31 whi. exerts a con= stant effort to move the edge of the dog into the notches 28 and 29 of the bottom and top tumblers 16 and 17, one end of this spring being engaged with the dog, and the other with a pin 32 in the plate9a The said'plate' 9 is swung in the direction required for unlocking the look, through the medium of the o erating-dog 27 which is formed with a,

s oulder 33 for engagement by the straight edge of a notch 34 in the drive-wheel 35 which is riveted to a click-wheel 36 the regularl spaced notches 37 of which coact with a clic 38 turning upon'a pivot 39 in the tail 26 of the bolt, the click being furnished with an operating-spring 40, and provided upon its inner face with a stops. in 41 entering a slot 42 in the tail 26 of the olt. The drivewheel 35 is provided with a driving-pin 43 passing through a slot 44 in a follower wheel 45 mounted on the tube 18, the projecting inner end of the said pin 43 coacting with the finger 46 of a driver 47 mounted upon the tube 18 and having its inner end formed with a finger 48 passed through one of the circular series of holes 15 in the front wheel-tumbler 17 The wheel 13, already described,

takes the place, as it were, of another driver like the driver 47. The drive-wheel 35 and the click-wheel 37 are connected by a screw 49 with the hollow shank 50 of a knob 51 having an index 52 which is turned with ref erence to a dial 53 in the usual manner. spring 54 encircling the shank 50 normally pushes the knob 51 outward. Inward pres sure upon the knob enters a pin 55 carried by it into a notch 56 in the hub 57 and provides a point from which to begin the working of the.combination.

.The lock may be operated by counting the clicks as the click 38 drops into and rides out of the notches 37 in the click-wheel 36, or by the feeling of the same operation, or by following the index 52 over the dial 53,

jecting the bolt in looking the look. A

spring 59 applied to the pivot 3, is employed to assist the spring 58 in throwing the bolt into its locked position.

Itwill be understood that I do not claim as new the general mechanism of the lock,

the lockbeing thus adapted in the usual my invention being particularly directed, as

already specified, to the locking dog 2 and the locking-wheel 13 which insure the throwlock, the combinatlon with the bolt and tumblers thereof, of a locking-wheel connected with one of the tumblers, a lockingdog coact-ing with the said wheel and also coacting with the bolt for locking the same in its projected position, and means for operating the said locking-dog to bring it into play for coaction with the said wheel after the bolt has been unlocked, and when the bolt is moving into its locked position.

2. In a self-locking combination dead-bolt lock, the combination with the bolt and tumblers thereof, of an oscillating plate, an operating-dog carried by the said plate and coacting with the tumblers, a locking-dog connected with the said plate for oscillation thereby so as to lock and unlock the bolt, and a locking-wheel connected with one of the said tumblers for rotation therewith and enga ed by the said locking dog to hold the whee against rotation when the bolt is moving into its rojected or locked position, whereby the t rowing of the tumblers out of line at that time is insured.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

- JAMES'J. MURPHY. Witnesses:

OTIs B. HOUGH, HARRY 0. (how. 

